Improvement in hose-couplings



UNITED -STATES PATENT4 OEEICE.

A. M. GEoEeE, on NAsHUA, NEW HAMPSHIRE.

IMPROVEMENT IN HOSE-COUPLINGS.

Specification forming part of Letters Patent No. 44,794, dated October 25, 1864.

` lings, and I do hereby declare that the fol lowing is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part ot' this specitication, in which- Figure l is a plan view of a hose-coupling made after my improvement, one of the coupling-straps being thrown down to show the cam O, and the other strap being in position and having the wrench D applied to it. Fig. 2 is a vertical section through Fig. 1, taken on the red line.

Similar letters of reference indicate corresponding parts.

Hosecouplings that are used with re-engines or with other apparatus for putting out tires ought to be so made as to be capable of being fixed in position and also unxed instantaneously, and yet be secure from accidental unlocking. They ought also to be so constructed as not to become unserviceable by reason of ice inwinter or by collections of sediment al out the joint. Fu1t'iermore, their joints should be strong and simple in construction and in the mode of operating them, so that unskillul persons can use them with readiness.

It is, or has been, customary to make couplin gs of this character with screw-thread joints, which are liable to injury by jamming their threads and by vthe presence ot sediment and by rust, so that frequently the coupling cannot be gotready for use without great loss ot' time and labor, and sometimes not without the skill of those used to managing them.

My hose-coupling A is made of two parts, A and A2, each of which is secured to hose by means of the corrugations at their ends in the usual way.

The couplings are made to t one within the other by sliding joints, and they are made strong at those points because it is necessary to secure them against becoming bent by violent blows or heavy weights, which might destroy or injure their t. The drawings show the upper box, A, of the coupling as tting within the box .Azby a sliding joint, which ought to be made in aworkmanlike manner, so as to prevent the passage of water when the coupling is locked.

The exterior of the box A of the coupling is turned oi, so as to leave a shoulder, 2, to receive the end 3 of the box A2, the interior ot' which is also turned or reamed out so as to receive the end 4 of box A aga-inst its shoulder 1. The sides of box A2 are left the strongest and thickest of the two, to enable them to :receive at opposite sides of its circumference the metallic locking-straps B, which lie within grooves on the exterior ot' the box, (shown in dotted outline in the igures,) the inner face, d, of the straps fitting snugly against the sides of the box, and the recessed part e iitting against the exterior face of the box A', so as to bring the end b of the strap over the groove a, which is cut on the upper face ofthe solid part of the box A for the purpose of receiving the cam C. The end b of the strapis made of larger size, so that it can contain a socket or cavity to receive a cam, O, whose contour is shown in Fig. l. The cam lits snugly in the chamber, and an arbor, c, extends from its outer end through a hole in the back of the end b of the strap. rlhe wrench D ts upon the arbor c of the cam, and by its means the cam is turned, so that its longest diameter shall project down into the groove a of the upper box, A', when it is desired to lock the coupling together. The cam may be made with an increasing radius at'ter passing its plain face V on either side, so that it will lock the coupling, whichever way the arbor is turned, or it may increase only in one direction. rEhe cam is secured in its socket by a screw, g, whose end ts in a groove, 7, cut around the stem of the cam, and thus guides it in its revolution.

The inner and outer faces of the boxes of the coupling are iiush with each other.

My coupling is adapted for thejoints of all kinds of hose, whatsoever use they are put to.

When it is desired to uncouple the hose, the wrench is applied to the arbor c of the, cam, which is thereby turned, so as to bring the face V over the groove a, when the strap can be withdrawn, as seen in the gures.

I cla-im as new and desire to secure by Letters/Patent- The hose-coupling, constructed and operating substantially as within described.

A. M. GEORGE.

Witnesses:

N. P. MCKEAN, GEO. M. WILDE. 

